Psychologists work to develop a valid and reliable body of scientific knowledge based on research, and they may apply that knowledge to human behavior in a variety of contexts. Their goal is to broaden knowledge of behavior and, where appropriate, to apply it pragmatically to improve the condition of both the individual and the society. Psychologists respect the central importance of freedom of inquiry and expression in research, teaching, and publication. They also strive to help the public in developing informed judgments and choices concerning human behavior.